Power apparatus for use on vessels



Jan. 29, 1924. 1,481,829

A; E. L. CHQRLTON ET AL POWER APPARATUS FOR USE ON VESSELS Filed Oct.19. 1920 I Infan Patented. Jan. 29, 1924.

MORE, OF WESTMINSTER, LONDON, ENGLAND.

' POWER APPARATUS FOR USE ON VESSELS. Application filed October 19,1920. Serial No. 418,068.

To all whom it may concern: it to the propeller shaft or alternativelythe 56 Be it known that we, ALAN ERNEST Lnorsecond part of the crankshaft may be dis- RIO CHoRL'roN, C. B. E., and 'JoHN SAL- connected fromthe main part of the crank MOND Doro, subjects of the King of Engshaftand coupled to mechanism by means land, and residing, respectively, atWest of which a winch or other machine can be minster, London inEngland, and Grimsby, driven. Lincolnshire, in England, have inventedcer- In some cases more particularly where a tain, new and useful Imrovements' in Power winch is to be driven by the engine a varia-Apparatus for Use on essels, of which the b e speed transmissionmechanism is interio following'is a specification. posed between theclutch at the forward end This invention relates to power apparatus ofthe crank shaft and the winch. 65 for use on vessels more particularlyvessels it an en ine thus arranged it is conof the trawler type whereinthe power revenient to emp 0y a propeller of the featherquired foroperating the winch or other a ing type so that when it is desired toreduce l6 paratus when considered in relation to te the speed ofpropulsion the revolutions of power required for ropulsion is largerthanthe engine can beniaintained sub other cases and has fr its-object;'nconstantlwhile th r ulsiveIeflor .w a V .b. 4 I N V,- l I Iinternak'il combo t employed y e purp. pulsio'n while one. orimore of 1inders .are separately usable for applying aratelyor toge 7 power to awinch or other like mechanism or there maybe three groups comprisin sayor drivin an air compressor, dynamo or four cylinders in'the main enginewhich is other mac ine. The whole engine is didirectly coupled to thepropeller shaft,\vhile vided by arrangin the cylinders in groups theremay be one, two or more cylinders in s5 and the pistons in tilecylinders operate upon each of two or more other groups. With a crankshaft which is similarly divided and such an arrangement when the winch18 to the parts of which can be coupled or disbe operated the main groupof en ines alone connected by means of clutches. The cylmay continue tosupply ower or propulinders are so grouped and the crank shaft 81011when one or more 0 the other groups 90 and clutches so formed and arraned that may be coupled up for supplying powerto either thepower'obtainable' from all the cylthe winch. The fore or lesser cylinderinders ma vbe utilized for driving the progroup mayadvantageously beused as a 40 peller sha or only one or certain of the cylstarting en inefor the main part of the eninder groups may be so used while the re gineas wel as being available for the other maining cylinders or one or moreof the pur oses indicated. groups supply power for operating or driv- Ithe other mechanism for which the ing a winch or other machine. Thus forexpower is obtained from one or more cylin- 45 ample in the case of asix-cylinder engine der groups is for example a dynamo, this which isdivided into two cylinder groups mechanism may be driven through aclutch the pistons in four of the cylinders are confrom the forward endof the crank shaft but neoted to a length of crank shaftin which in thecase of mechanism of other types, but is coupled to the propeller shaftw ile the more particularly h, a variable speed 50 pistons in theremainlng two cylinders are transmission mechanism is convenientlyemconnected to a further length of crank shaft ployed between the Winchand the clutch at at each end of which is a clutch so that this theforward end of the crank shaft. It is part of the shaft may be eithercoupled to desirable to provide in conjunction with the main part of thecrank shaft andt rough this transmission mechanism some safety devicewhich in the case of Diesel or semi-Diesel type and has a winch willyield or prevent straining of the parts in the event of an overload, onthe winch. The nature of such safety device may va as found desirableand may comprise for example a slip ing control device suitably disposedin t e transmission mechanism.

The several clutches by means of which the parts into which the wholeengine is divided can be coupled together and suitably controlled andoperated and the constructionof these clutches may be on some knownlines. The details of construction may be modified as found desirable inaccordance with the type of vessel to which the invention is applied andto suit the winch or other mechanism which is to be operated.

The accompanying drawings illustrate diagrammatically two alternativeconstructions of power apparatus in accordance with the presentinvention. In these drawings Flgure 1 represents a longitudinalsectional elevation of one arrangement of the power apparatus disposedin a vessel ,the enine being available for propulsion and also fordriving a dynamo;

Figure 2 is a similar view showing an arrangement of the apparatus wherethe engine is used for propulsion and also for the driving of a winch.

Like letters indicate like p ts throughout the drawin%.

Referring to igure 1 the engine is of the the cylinders arranged in twogrou s. In one of these groups A there are our cylinders while in theother group B there are two cylinders. The cylinder group A has its part0 of the crank shaft directly coupled at one end to the propeller shaftD. At the other end of the part C of the crank shaft is a clutch E bymeans of which the shaft C can be coupled to one end of the crank shaftpart F of the second cylinder group B. At the forward end of this crankshaft part F is a clutch G by means of which the crank shaft can becoupled to the shaftof a dynamo H. e

The propeller J may be of the feathering or variable pitch typeconstructed on known lines and controlled by mechanism mounted as at K.

If it is desired to utilize full power for driving the propeller J theclutch E is enaged so as to couple the crank shaft arts T3 and F and theclutch G is disengage If the clutch E is disconnected the propeller willbe driven by the cylinders comprised in group A while the cylinders'inroup B can be utilized to drive the dvnamoil when the clutch G isengaged. If desired by means of a variable pitch propeller such, forinstance, as disclosed in the patent to Henry Barcroft, No. 431,428,dated July 1, 1890, the propulsive efl'ort'can be modified while 1,481,aao

maintaining substantially constant the revolutions of the engine. IReferring to Figure 2 the construction and arrangement of the enginewith two groups of cylinders A and B and a divided crank shaft Cltogether with a variable pitch propeller J coupled to the after end ofthe crank shaft and the clutches E and G is substantially as describedwith reference, to Figure 1. In this instance, however, at the forwardend of the part F of the crank shaft and beyond the clutch G there isarranged a variable speed transmission mechanism ll of some suitabletype and construction which can be coupled to the part F of the crankshaft by the clutch (i. The driven member of the variable speedmechanism L carries a bevel wheel .\l which gears with a. bevel wheel Mmounted on the end of vertically disposed shatting This shafting N atits upper'end drives through gearing a winch H of suitable type. In thelength of shafting N there is preferably disposed a safety device N ofsome known construction which may comprise for example a slippingcontrol and this device serves to prevent dama to the mechanism in theevent of an over oad on the winch H. The Variable speed mechanism L isconveniently controlled bv a hand lever L disposed on the deck 0." ofthe vessel adjacent to the winch H.

The arrangement is such that if the whole engine power is required forpropelling purposes the part F of the crank shaft belonging to theengine grou B is coupled to the crank shaft part Cwhic belongs to themain engine grou A by means of the clutch E, the clutch (1 beingdisconnected. If, however, power is required .for' driving the winch Hat the same time that ower is wanted for propulsion the clutch isdisconnected and the crank shaft part F is coupled to the variable speedmechanism L by means of the clutch G. If desired wer from the mainengine group A may a sohe used for operating the winch if the portions 0'and F of the crank shaft are con led by the clutch E and if the bladesof t e propeller J are adjusted so as to reduce or el minate thepropulsive effort.

The mechanism by meansof which the winch H is operated may vary inaccordance with requirements as also the position in which this winch isdisposed with relation to the engine.

C -'lindeis grouped and operating on a divided crank shaft in the mannerdescribed may be utilized in various ways and for arious purposes.

What we claim as our invention and desire to secure by Letters Patentis 1. In wer apparatus for use on vessels, in combination, an internalcombustion engine comprising a plurality of cylinders ar-' ranged ingroups. a crank shaft divided in accordance with the gr ders,

forming means at the opposite ends of the crank shaft by eit er workperforming means or any fraction thereof utilized by either such means.

2. In power apparatus for use on vessels, in combination, an internalcombustion engimcomprising a plurality of cylinders arranged in groups,a crank shaft divided in accordance with the grouping of the cylinders,means for detachably coupling the sections of the crank shaft together,a propel- 8 ler at one end of the crank shaft and a rotatable work shaftat the other end of the crank shaft mechanism associated with thepropellcr and mechanism rotatable shaft of work performed by each may bevaried or ren-

